Apparatus for use in radioimmunoassays

Abstract

Antibody coated cellulose paper can be used in radioimmunoassays in conjunction with test apparatus comprising a receptacle tray with multiple wells, each of said wells having at its bottom an orifice of such size and shape as to retain liquids used in the procedure under given pressure conditions and permit the evacuation of said liquid under reduced pressure.

What is claimed is: 
     
       1. Apparatus for use in a radioimmunoassay test procedure comprising a receptacle tray having multiple wells, each of said wells having at its bottom an orifice of such size and shape as to retain the liquids used in the radioimmunoassay under given pressure conditions and permit the evacuation of said liquids through said orifices at reduced pressure, and structure adapted to surround the outlets of said orifices with an environment of reduced pressure. 
     
     
       2. Apparatus in accordance with claim 1 wherein the orifice is in the shape of an inverted conical frustrum. 
     
     
       3. Apparatus in accordance with claim 1 for use in a radioimmunoassay test procedure comprising a rectangular prism structure with rounded corners, having multiple wells protruding into its interior from one side, each of said wells having at its bottom an orifice of such size and shape as to retain the liquids used in the radioimmunoassay under given pressure conditions and permit the evacuation of said liquids through said orifices at reduced pressure, said structure having an orifice at or near its bottom through which air can be pulled creating an evacuated condition within the structure. 
     
     
       4. Apparatus for use in a radioimmunoassay test procedure comprising a receptacle tray having multiple wells, each of said wells containing an antibody coated cellulose paper that is pervious to the liquids used in the radioimmunoassay procedure and each of said wells having at its bottom an orifice of such size and shape as to retain the liquids under given pressure conditions and permit the evacuation of said liquids through said orifices at reduced pressure, and structure adapted to surround the outlets of said orifices with an environment of reduced pressure. 
     
     
       5. Apparatus in accordance with claim 4 wherein the antibody coated cellulose paper is in the shape of a disc and has a plastic support circumscribing its periphery.